<?php


namespace app\common\pay;




use app\common\model\Order;
use think\facade\Db;

class Wechat{
    public function Pay($order,$openid){
        $fee = $order['money'];
        $appid = 'wx72f728185299bda9';//这里写小程序AddId
        $body = $order['instruction']; //这个自己写,微信订单里面显示的是商品名称
        $mch_id = '1626429499';
        $nonce_str = $this->nonce_str();//随机字符串
        $notify_url = 'https://movie.jiezhui.top/wxapp/order/notify.html';
        $out_trade_no = $this->order_number($openid);//商户订单号
        $spbill_create_ip = '120.77.76.68';
        $total_fee =    $fee*100;//因为充值金额最小是1 而且单位为分 如果是充值1元所以这里需要*100
        $trade_type = 'JSAPI';//交易类型 默认
        //这里是按照顺序的 因为下面的签名是按照顺序 排序错误 肯定出错
        $post['appid'] = $appid;
        $post['body'] = $body;
        $post['mch_id'] = $mch_id;
        $post['nonce_str'] = $nonce_str; //随机字符串
        $post['notify_url'] = $notify_url;
        $post['openid'] = $openid;
        $post['out_trade_no'] = $out_trade_no;
        $post['spbill_create_ip'] = $spbill_create_ip; //终端的ip
        $post['total_fee'] = $total_fee; //总金额 最低为一块钱 必须是整数
        $post['trade_type'] = $trade_type;
        $sign = $this->sign($post); //签名
        $post_xml = '<xml>
	           <appid>'.$appid.'</appid>
	           <body>'.$body.'</body>
	           <mch_id>'.$mch_id.'</mch_id>
	           <nonce_str>'.$nonce_str.'</nonce_str>
	           <notify_url>'.$notify_url.'</notify_url>
	           <openid>'.$openid.'</openid>
	           <out_trade_no>'.$out_trade_no.'</out_trade_no>
	           <spbill_create_ip>'.$spbill_create_ip.'</spbill_create_ip>
	           <total_fee>'.$total_fee.'</total_fee>
	           <trade_type>'.$trade_type.'</trade_type>
	           <sign>'.$sign.'</sign>
	        </xml> ';
        //统一接口prepay_id
        $url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
        $xml = $this->http_request($url,$post_xml);
        $array = $this->xmlToArray($xml);

        if(!isset($array['prepay_id']) || empty($array['prepay_id'])){
            //失败
            $data['state'] = 0;
            $data['text'] = "错误";
            $data['return_code'] = $array['return_code'];
            $data['return_msg'] = $array['return_msg'];

            return [
                'status'=>false,
                'data'=>$data,
                'msg'=>'订单支付失败，请联系管理员',
            ];

        }else{
            //成功
            $time = time();
            $tmp['appId'] = $appid;
            $tmp['nonceStr'] = $nonce_str;
            $tmp['package'] = 'prepay_id='.$array['prepay_id'];
            $tmp['signType'] = 'MD5';
            $tmp['timeStamp'] = "$time";
            $data['state'] = 1;
            $data['timeStamp'] = "$time";//时间戳
            $data['nonceStr'] = $nonce_str;//随机字符串
            $data['signType'] = 'MD5';//签名算法，暂支持 MD5
            $data['package'] = 'prepay_id='.$array['prepay_id'];//统一接口返回的 prepay_id 参数值，提交格式如：prepay_id=*
            $data['paySign'] = $this->sign($tmp);//签名,具体签名方案参见微信公众号支付帮助文档;
            $data['out_trade_no'] = $out_trade_no;
            $this->setOrderDetail($order['order_no'],$out_trade_no,$mch_id,$openid,$appid);

            return [
                'status'=>true,
                'data'=>$data
            ];

        }
    }

    private function setOrderDetail($order_no,$out_trade_no,$mch_id,$openid,$appid){

        $orderModel = new Order();
        $orderModel->where('order_no',$order_no)->save([
           'out_trade_no'=>$out_trade_no,
           'mch_id'      =>$mch_id,
           'openid'      =>$openid,
           'appid'       =>$appid,
        ]);

    }

    //随机32位字符串
    private function nonce_str(){
        $result = '';
        $str = 'QWERTYUIOPASDFGHJKLZXVBNMqwertyuioplkjhgfdsamnbvcxz';
        for ($i=0;$i<32;$i++){
            $result .= $str[rand(0,48)];
        }
        return $result;
    }

    //生成订单号
    private function order_number($openid){
        //date('Ymd',time()).time().rand(10,99);//18位
        return md5($openid.time().rand(10,99));//32位
    }

    //签名 $data要先排好顺序
    private function sign($data){
        $stringA = '';
        foreach ($data as $key=>$value){
            if(!$value) continue;
            if($stringA) $stringA .= '&'.$key."=".$value;
            else $stringA = $key."=".$value;
        }
        $wx_key = 'eMYG05lJKJ4BNdNvrUX4fqt2ePJ6JyAk';
        $stringSignTemp = $stringA.'&key='.$wx_key;//申请支付后有给予一个商户账号和密码，登陆后自己设置key
        return strtoupper(md5($stringSignTemp));
    }

    //curl请求啊
    function http_request($url,$data = null,$headers=array()){
        $curl = curl_init();
        if(count($headers)>= 1){
            curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
        }
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        if(!empty($data)){
            curl_setopt($curl, CURLOPT_POST, 1);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        }
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $output = curl_exec($curl);
        curl_close($curl);
        return $output;
    }


    //xml 转换成数组
    private function xmlToArray($xml) {
        //禁止引用外部 xml 实体
        libxml_disable_entity_loader(true);
        $xmlstring = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
        $val = json_decode(json_encode($xmlstring), true);
        return $val;
    }

    //获取xml
    private function xml($xml){
        $p = xml_parser_create();
        xml_parse_into_struct($p, $xml, $vals, $index);
        xml_parser_free($p);  $data = "";
        foreach ($index as $key=>$value){
            if($key == 'xml' || $key == 'XML') continue;
            $tag = $vals[$value[0]]['tag'];
            $value = $vals[$value[0]]['value'];
            $data[$tag] = $value;
        }
        return $data;
    }
}